This reference material provides technical information and guidance on automotive mechanics. It particularly deals on electrical systems, fuel systems, the lubrication systems, the breaking systems and other important parts and accessories of motor vehicles. This material is a valuable guide in the maintenance of and the identification of the performance problems of motor vehicles that are being used by Army units.      In using this manual and in the actual conduct of automotive mechanics training, trainers must ensure that safety procedures are observed at all times. Leaders, trainers, and soldiers must remember that safety is everyone’s responsibility.